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On next week's episode of GLEE, the New Directions celebrate the holidays while trying to attend two events scheduled for the same time. In the episode, the McKinley kids sing such holiday tunes as 'All I want for Christmas is You,' 'River,' 'Blue Christmas,' 'Christmas Wrapping,' and more! Click below to listen to the audio clips!

On last night's episode of GLEE, the New Directions competed at Sectionals against the Troubletones; a former Glee Club member, Sam, returned to McKinley; Quinn weighed an important decision; Tina helped Mike with a problem regarding his future. MIss the episode? Watch all the performances below!

On next week's episode of GLEE, the New Directions celebrate the holidays while trying to attend two events scheduled for the same time. Check out a sneak peek of the Christmas episode below!

On tonight's episode of GLEE, the New Directions compete at Sectionals against the Troubletones; a former Glee Club member, Sam, returns to McKinley; Quinn weighs an important decision; Tina helps Mike with a problem regarding his future. Check out a sneak peek of the episode below!

On tomorrow night's episode of GLEE, the New Directions compete at Sectionals against the Troubletones; a former Glee Club member, Sam, returns to McKinley; Quinn weighs an important decision; Tina helps Mike with a problem regarding his future. In the upcoming episode, the show tackles 'Buenos Aires' from Evita, Michael Jackson's 'Man in the Mirror,' Jackson Five's 'ABC,' and more!

On tonight's episode of GLEE, the New Directions compete at Sectionals against the Troubletones; a former Glee Club member, Sam, returns to McKinley; Quinn weighs an important decision; Tina helps Mike with a problem regarding his future. Check out photos and audio from the episode below!

Get a look at GLEE's upcoming 'Hold on to Sixteen' episode, airing on Tuesday, December 6, below!

On tonight's episode of GLEE, Finn tries to rally the rival show-choirs behind one of their own. Sue's bid for political office causes heartbreak for another teacher; and the student body elections turn scandalous. Check out photos and audio from the episode below!

On the next episode of GLEE, airing November 29, Finn tries to rally the rival show-choirs behind one of their own. Sue's bid for political office causes heartbreak for another teacher; and the student body elections turn scandalous. Check out a sneak peek of the 'I Kissed a Girl' episode below.

Now in its third season, GLEE is a musical comedy about a group of eager and ambitious students who strive to outshine their singing competition to win Nationals while navigating the cruel halls of McKinley High. Hear the next songs for the hit show below!

On the next episode of GLEE, airing November 29, Finn tries to rally the rival show-choirs behind one of their own. Sue's bid for political office causes heartbreak for another teacher; and the student body elections turn scandalous. Check outa sneak peek of the ladies of New Directions singing Katy Perry's 'I Kissed a Girl' below.

A few weeks ago on GLEE, Rory (Damian McGinty) sang about being green. In a recent interview, this Glee Project winner revealed his surprise at hearing that he was going to sing a song originally by Kermit the frog.

This week on GLEE, the rival clubs battled it out over a game of dodgeball. Get a behind the scenes look below!

In last night's episode of GLEE, Sue started a smear campaign against her rival for the Congressional seat, and the New Directions tackled 'Rumor Has It/Someone Like You,' 'I Can't Go for That/You Make My Dreams,' Hit Me with Your Best Shot/One Way or Another,' 'You and I.' Miss the episode? Click below to watch all the performances!

In addition to the regular cast, GLEE has featured guest appearances by a wide range of talented performers, including Gwyneth Paltrow (who won the 2011 Emmy Award for Outstanding Guest Actress in a Comedy Series), Carol Burnett, Kathy Griffin, Cheyenne Jackson, John Stamos, Britney Spears, Kristen Chenoweth, Idina Menzel, Jonathan Groff, Molly Shannon, Olivia Newton-John and Neil Patrick Harris, who won a 2010 Emmy Award for Outstanding Guest Actor in a Comedy Series for his work on the show. See what's up next for the series below!

In tomorrow's episode of GLEE, Harmony (Lindsay Pearce), the girl Rachel met at the NYADA mixer, comes to McKinley High to terrorize Rachel into not applying to the program. In the epidode, the New Directions tackle 'Rumor Has It/Someone Like You,' 'I Can't Go for That/You Make My Dreams,' Hit Me with Your Best Shot/One Way or Another,' 'You and I' and 'Hot for Teacher.' In the video below, GLEE star Naya Rivera (Santana) chats about what to expect from tomorrow night's episode.

In tonight's episode of GLEE, Harmony (Lindsay Pearce), the girl Rachel met at the NYADA mixer, comes to McKinley High to terrorize Rachel into not applying to the program. Check out photos and audio from the 'Mash-Off' episode below!

The all-girls show choir, The Troubletones, will go against the New Directions in a friendly competition in the all-new 'Mash Off' episode airing Tuesday, Nov. 15 (8:00-9:00 PM ET/PT) on FOX. Check out The Troubletones' debut performance, a mash up of Adele's ‘Rumour Has It' and ‘Someone Like You' from her album 21 (the biggest selling album in the world this year) on Vevo.com. The performance also marks Glee's 300th musical performance. 'Rumour Has It/Someone Like You' will be available on iTunes 11/15.

In last night's episode of FOX's GLEE, the kids prepared for opening night of the school musical, and several of them contemplated taking the next step with their significant other. Meanwhile, Coach Beiste took a big chance in her personal life; and Finn had high hopes when a college football coach scouts the school's team. MIss the episode? Watch all the performances below!

Entering its third season, GLEE is a musical comedy about a group of eager and ambitious students who strive to outshine their singing competition to win Nationals while navigating the cruel halls of McKinley High. Since its debut, GLEE has become a bona fide cultural phenomenon, received prestigious honors including the Golden Globe and Peabody Award and singlehandedly made glee clubs cool again. See what's up next for the series below!